Control mechanism



BEST AVNLABLE COPE A ril 6,1926. 1,579,747

, F. BALZER CONTROL MECHANISM Filed Nov 22, 1923 Z Sheets-Sheet 1 "A ril 6,1926.

SEST AVNUKBLE CGPX 1,579,747. F. BALZER CONTROL MECHANISM Filed Nov, 22, 1923 2 Sheets-Sheet 2 Patented Apr 6, I926.

Marinate col UNITED STATES PATENT OFFICE.

FRITZ BALZER, OF MOLINE, ILLINOIS, ASSIGNOR TO TROY LAUNDRY MACHINERY COMPANY, LTD., OF EAST MOLINE, ILLINOIS; A CORPORATION OF NEW YORK.

CONTROL MECHANISM.

Application filed November 22, 1928. Serial No. 676,287.

To all whom it may concem:

Be it known that I, Fnrrz Bixnznu, a citizen of the United States, residing at Moline, in the county of Rock Island and State of Illinois,'have invented certain new and useful Improvements in Control Mechanism, of

which the following is a specification.

The present invention relates to control mechanism. i

The present invention is illustrated and will be described in connection witlrmechanism for controlling the movement ofa rotatable member such as the rotary cylinder of a washing machine.

Before proceeding with a statement of the objects of the present invention and'a de scription of said invention it may be'stated that the invention is particularly applicable to devices in which it is desirable to bring a moving member to rest at a predetermined: point without undue shocks andwithout requiring particular skill upon the' part of the operator. Such mechanism is represent-ed in the rotary cylinder of a; washing machine. As is well known, common types of washing machinescomprise an outer casing or'shell which enclosesarotary. cylin der. Said'cylinder encloses the goods to be washed and,in order to permit insertion and removal of said goods, said cylinder is ordinarily provided with a door. The-enclosing casing or shell is also provided with a door 7 to permit access to-the' interiorofthe-eylinder through the shell or casing. In order to bring the rotary cylinder to a stop in such a. position that acces's tothe cylinder door. may readily be had through the casing door',.various control meanshave been devised: In certain common types 1 of rotary cylinder. washing machines, meanshave' been provided whereby the cylinder after rotating a predetermined number of revolutions in one di rection is automatically reversed indirection and after a predetermined number of revolutions is again reversed, this reversing process being maintained throughout the washing operation. W'ith certain control devices, it handled by an unskilled operator it frequently happens that just as the operator is attempting to bring the rotary cylinder to a stop in the properposition by inching same toward e'aid position, the autornatid mechaniem for r versing the direction rot;

lion of the cylinder will perform its function bafiling'the efforts of the unskilled operator.

The above example is chosen as an illus tration to indicate the sortot' problem which applicant has solved by the presentinventron. It will be understood as the descrip-'- tion proceeds, howeveiy that the inventon is not limited to washing-machines or to any particular type of machine, but is of much broader application.

An objectof the present invention is to provide controlmechanism for automatically bringing a moving member to a stop in a predetermined position A further object is to provide-control mechanism applicable to the rotarycylinder, of av washing machine for automatically bringing saidcylin der to a stopatla. predetermined position;

A further object is to provide controlinech anism which, upon a simple actuationof single memberwill control the movement of: a moving member to ,slow down the speed of said member and thereafter to positively, bring said member to a stop at a predeter mined position. r I l A further 'objectisto provide automatic stopping mechan'insm' for bringing a mem; her to a stop at a predetermined position witha minimum of shock. n Further objects will appear as'the descrip-, tion proceeds. l -1p, 5'

Referring to the drawings 1 Figure 1 is a sectional view ofvcontrol mechanism? embodying the principles; of the present invention v y i Figure, 2 is a view taken along the plane indicated by the arrows 22 of Figure 1;

Figure 3' is a view illustrating the posis tion of certain operating parts under run{ ning conditions; v y I Figure 4 is a. view of the parts shown, in Figure 3 after a simple actuating movement has been imparted to a'member constituting, part ot'the control mechanism but before any speed changes have been accomplished;

Figure 5 is a view showing the parts in an intermediate stage during the stopping operation I Figure 6 shows the parts at the moment when stop mge has ben accomplishcdi Figure {illustrates detail otthe. schist:

ing mechanism, being a view taken along the plane indicatedrhy the" arrows 77 0t 1* i gure- 1.

Figure 8 indicates certain switch mechanisnr; and I Figure 9 represents diagramn'iat ically anelectrical circuit which is illustrative of electrical circuits which may be used incon-'- ncction with the present invention.

Numeral 11 indicates a housing whichmay be provided with the cover 12. Molinted ot' tsid'e' of' the cover 1 2' is the handle 13 whichis a'dtiptedto have-a swingingniovement about the axis of the shaft 14. Theouterside of tli'e'cover'1'2 may be provided with atmt m'en't means takingthe form ofr'atch'et teeth, said abutment means bein i indicated by the niinrleral 13 t The handle 13 may be provided with Spring pres'sed cont-fol mechan sfn 13" which will yieldihgly hold the handle 131m piedet'en mined positions relative to the cover 12-,

severalo'fsaid positions bear g1 shown in Figures 3 to 6 inclusive. The details of the; pressed mechanism cooperating with the handle 13 need notibe'described i'n' detail herein inasmuch as structures suitable for the. l tiiir-pos e are w'll'knowlr to those skilled t'hongh*yie1ding1y"held i n awredetermined I position,- maybe-readiiymoved by'means, to-

be referred to" Hereinafter, from said 'predetermined positions to--an-ad'jacent prede-" termifie'd posit-ion. Ninne'ral' 1-5 indicates a s'tbpme'mbei fixed with reference to" the cover 12 and the numeral 16 indicates apointer rigid with respect to the handle 13 for convenience in indicatingthe position or said handle 13*. j

The handle 13 isfiixed-ly mounted upon the sleeve 1? whichis iotz'tta'bly mounted" in the cover 12, which sleeve, as t lie'pmts are viewed in Figure 1 xtends to the leftZ-to the plane ind'i'cated b'y thenumerals- 7+7- in said Fi ure 1. Fixedly nrountedLupomt-he' sleeve 1', as for example, by m'ea'ns of a key which is held in p'lace by a set: screw 19, is the escape lever Sa'idescape lever 20 hasthejfun'ction whenthe handle-134s in a reeecevmi-nedposition, which, for con venience, may be termed the runningposirtion, tolioltl the weight lever 21" in a prcdeterm'ined position, as shown in Figure- 3. Said weight lever 21- is fast uponthe shaft 22 wli'ichjextends in'a line substantially parallc l ivitli the Sll't'ltt 1 1. The shaft- 22 has rigiclb mounted t he'r'con' the pawl 2 -3 adapt-'edt'o have cooperative relationship with the ratchet segment 24. The ratchet: segment is fixedly mounted upon the sleeve 25 iv l'i-ich extends? toaboundary max-lied by the ri'glit h'zmd face oft-he Boss 26 forming part of the ratchet segment 2st he parts are viewed in Figure l.- Also fixedly mounted uponthe-sleeve i2?) is the lever arm- 97 which carries the roiihr .38 adapted to cooperate with the cam member 29. The cam member: 29 may move insgjnchronisn'r with a moving. menili'e'i to lie czar;- trelled. Referring to washing m'li'cliines, said cumxrnemlxrr J9 may be mounted to rotate with the cylinder of a washine machine. Sui'd c-am member 29" is provided with the raised portion 30 which, as the cam 15) rotates will operate the lever 27 to-connnuni"- cate'mot'ion to the sleeve 25 unti ratchet segment 24.

The shaft 22 isrot'at-ably mounted upon: tli'elever 31. Said lever 31' isbifurcated, loving thetwo legs 32- and' the leg 32' being rotat'ably nrounted uponrt-h'e sleeve 25= a nd t h'c' leg 33 being fixedly'connected to tlhe shaft The upper portion of the lever bli is also bifurcated to provide arms 3%; 34, which carry the pin 35-f0r pi-vota-lly mount ing the rod 36, whiclr may controlbrake mechanism cooperating: withthe member whose speed is to be controlled, namely, thememberin synchronism withwhich the cam 29 rotates, that? is, in the illustration chosen-l tor tlhis 'description,the washing machine cylinder. It willbe clear'thatiwhen' the cam: 29" is rotated, engagement oi-the higlr-por'; t ion 30' of said camwiththe rollev- 2 S--will result-in an! oscillating movement -of arm 27, which oscillating'a mon'cnientwill? be, communicated tofihe ratchet" segment 24. t'he pawl 23 is in a position to cooperate with;

the ratchet segment 24, the net result of the,

oscillation of: the arm 27 w-i lli-be a step by-. step movement-of pawl: 23 and lever 3 1 in; a; lett-hand'dinection asthe "parts are viewed in" Figures 2 to- 6- inclusive; Fimd-ly; mounted upon the 1e ver is the electrical. control bloolti 37 which ma have an. arcnate, surface hawingthe center line of shaft; 1 as 'an" axis. The arcuwte! SHTfRQQi oh the c onnot block "37.- carriesthe -'contaetmembers, 38 and 39'whic-lr are adapt-ed-to be; selec.-; tively engaged by the: contact fingers ;40;41, 42 and' 43,- wh-ich contact fingers mayil e sup-i poi-tech in any preferred way with-in the, housing 11;: The"electrical--connections of; the contacts 38 and 39 and the contact fingers 40, 4-1:, 42 and 4. 3 need not be-de scr-i bed in detail hereing nor need the circuits controlled thereby be described, it being sufficient tostate that when .the contact members and the contact lingers are in one predetcrmincil= rela-tionship-,; the circuit through-the driving'motor for the cam 29. will be open; in another relationship, said! circuit will be connected to provide a: lowsp(- .orl't'o1=: l:ri(l driving irmton; and in anotheii rclzrtiemship; said motor will be connected tor full speed.

l iwedly mounted. upon the shaft- '1. l:.. is the lever l ladapted to yicldingly controlsEst a Z will yieldingly. carry the handle 13 through the degree of movement 1mparted to said shaft I4. I

From an inspection of Figure 7 it will be clear that the hub portion of escape lever 2t)-"a'nd thehub-[portion of .the leg 33 of lever-'31 are provided with abutting portions lz' and 46, which abutting portions limit relative rotation between said escape lever 20 and lever 31;. The'construction oi? the abutting portions and46 allords lost moti'on'b'etween said escape lever 20 and lever 31, which lost motioniis indicated by the angle Xin'Figure 7." r

Figure? indicates an electrical circuit whiclr "may be used in connection with the rotary cylinder ofiawashing 'machine or in connection with other mechanism whose motion iStQfbe controlled. The numeral 47. indicates a drivin motor-and the,- numeral 48' indicate-a switch boat; 1 The numeralet) indicates certain r'contr'ol. mechanism: for varying the connections to motor 4i7,-whichcontrol mechanism 49fmaybe' operated by the electri'eal 'fmotor 50: which :may. receive it s l energization from any )Pi'QfBI'I'Bd; source. T he" numerals 38 I and 39 indicate the contact members illustrated in greater detailin Fig ure 8, and the: contact fingers i 40', 41, I42 and 431 are shown in cooperatioirxwithz said contact members 38 and :39. znilhe i numeral 51- indicates an electric switch suchsas .is commonly-providedaiponiwashingmachines for preventing the' operatidn' of such machines antir the doorsithreof are. in closedwposi-v tion. i 'lhe Fnumei'al's 52,. ?52 indicate power lines-leadingltothe-switch box-48.1,-

i f; 7 Iii explaining a mode a of operation iof the above described embodiment ofsthe .present invention abrief. outline)- of thei furicti OIL-r of the electrical circuitsishownlin lligurifiiwill begive'n; -13 11:1,- lairzztfioi .111 J.- The circuits: bf: the drivingimotori 447-;- my be controlled by switches located-within the switch look 48, ithei' m'anner in which said 5 switches roperate needing-anon :detaile'd --;de-;

scripti'on therein, it; being zsufiicie'ntto' state that switch mechanism is well known Which will control a motorf'to cause, s'aidmotor to rotate in one direction for. a vpredetermined number of revolutions and then reverse its movement for a predeterminedwnumberof revolutions proceeding through; this. cycle as long as:certain'predeterlnined connections are-maintained. Switch mechanism is also well-known havingthe functionv of causing the motor to run at different speeds or to be unenergiz'ed. .For the purpose. of changing the connections; to the motor 47; to produce changes in the directionof the rotation; of a washing machine ,cy-lind'er,-, as above de OP w/ABLE C a scribed, the controller 49 may bedriven by the small motor 50. For the purpose of controlling the speed of the electric motor 47 the electric switch mechanism comprising the members 38 and 39 and the contact fingers i-O, 41, and.et3 are provided. As referred to above, the connectionsof said contact fingers 40,41, 42 and 43 will be controlled in response to the movement of the control block 37 which, as will be ex-. plained in detail hereinafter, is responsive to the. action of ratchetsegmentfdl and'the, pawl 23. In the position illustrated in Figure 9 all of the contact fingers a0, 41, l2 and a3 are disconnected fromcircuit and the. driving motor 47 will be deenergized. Vv'hen the contact members 38 and 39,.have been moved to a position in which contact fingers 41 and 42- are bridged by contact member 39,-a relatively slow-'speed-otlrotw. tion ,willresult in the. electric motor e7. \Vhcn contact members 38 and 39 have been moved to aposition in which contactfingers H) and, 41' are bridged bycontact member 38 and'contact'fingers gland 43 arebridged bycontactmember 39, full speedot' the elec trio motor; 47 will result. lVhen. it is desired toproduce normal OP-s eration of the moving mechanism carrying the 'canr 29 ,wl1ich,; for convenience, in; this specification has been referred .to as awash ing machine cylinder, the handlel3 will be moved to 1 the ;position indicated in Figure 3. YThe ,handle l3jisrigidly united to the escape leyerQO; and when the l1 andle, l 3-,. is in the position shown in Figure 3,fsaid,es-, capelever 20. will beheld in a substantially vertical position. In, this position, tliees; cape ,leverf20 abutsagainst the weight lever 21 sothat ,said weight lever is held outpf its depending position.v Theweight lever 21 is rigidly united to the pawl 23, and at his. time d. real 3 i h ld? 9 1 Often: gag m nt wi h; he te th, Qthe; rat het s ementi2 lig .By reason of the, abntt ing relative positi ns etav e h port o s; 45 m .46 (1 the escape lever 20, and thelevr 3 1 respec-. tively, movement; of handle, 13 to itsposition shown in @Figure. ;3, will have caused said lever 31 to movein a clockwise directionpas indicatedv in Figure 3, to the-position shown,-

By reason of the-lost motion betwee rescape lever 20 and-lever 31, which-lost. motion is indicated by the angle X in Figure 'fpthe lever tll will lag behind :handle -13 by the angularity indicated by said .letter, X. WVhen' the handle 13 is in-the positionreferr'ed to, -that is, the position shownlin Figure 3, therod. 36 will be held over in its right-shand position whereby to cause the release of thebrake mechanismcontrolled by said rod. At this time, also, the-switch mechanism mounted. upon the holder 37 will be at its limit of clockwise movement whereby the in fin e s e a --a 1l; e, n

BEST AVAILABLE COP.

engagement with the contia'climember 38 and thespring fingersn'nd- 43' will lie in engagement/with the cont-act'membcn 39. The

conditionsimmediately above referred to are thosefor producingnormaltoperation of the mechanismcarrying the cam 29.

W h'en-- it lei-intended to stop the rotating; mechanism inoludlng-tlie cam 29, the operator will move thehandle 'l -l in a counter- 1": flock-wise direction through the angle X to the-position shown in Figure 4. By reason ofthe lost motion between-the abutment portions l'fi-il'nih 46 of the escape lever and lever 33- respect-ively, said movement of handl'e' 1'8 in a counter-clbckwise direction will have no' iimnedifite'e'ltect upon-said lever 31 or the rod-36 connected to SflidJ'lGVOl 31-.

The movement? referred to will, however,

withdraw the e'sca-pe lever- 20 from holding reliitionsliip-withthe weight lever 21 wherein;

the pawl 23'rigidly connected t'o-said weight. l'cver 21-will he allowed-to gravitate to a position i n which said' pawl 23 has= cooperative 1e'lliti'onfsh'i'1') with the ratchet? segment 24'.

rigidly unitedto the rocker a'xfm 27 which cooperates with the eamgssy o'f 'the memlier to he contr'oll'edl Ns'*sd itl cam 29 rotates, the higli 50mm so'theieoig whenever said high pet tions-3010mmcanteen with the roller 28; 'cmise's oscillating; ri'n'oveme'nti of the arm'- 2''? ancl-ratchetjse'g1nent 241 Figure 4 iep'ifiesents conditions after the handle 13 has heen'nioved throughthe angle X but before the-high portion somft'he cam 29 has operated-th'e-arxn-27;

Figtir'e- 5 represents conditions at the instant that tile-high portion 30 "of can] BO-has efb merit. This upward Inbielnent of the arm 27' as the parts are vi'ewjed'in Figures 3 to' 6 int-lathe; ctmxs the a'otuz'lrtior'rin a" counterelo'ckwisediremoh 10f the ra'tchet; segment riealfpo ition; assh'own' in Figure-5. Movenient (if-lever 31' results-iii the pulling of rod S6ae-Vi'eued inl igure 5r, wllereby'to ligl'ith apply the Brake mechanism controlled by said lever: The switch m'e't'hanisi-n carried hy't he switchblOC'k 37 which 'liloclt is mounted u'ponzthcshaft 2-2 Connected? with lever 3l, will-now he in the position indicated in Figure iii-which eoiitat' t'fin'gers l0 and it mgs ewiuirueswiten Contact, 35) and (oncircuit. 'llhese connection may be utilized. to slow dowirthe speed of the motor- 1-? which drives the mechanism movingin synchronl'smwith the cam- 29. In (-1150 the controlmechanism forming the suhje'ctmatter of the'present invention is used in CODIlQCiZ-lOIlt with washing machine cylinders of there'- xersing t \'1o,.sai(l' changed electrical connections may be utilized to eliminate the reversing feat-lire wherebytoinsure against; the possibiltyof the washing:- machinecylinder reversing its-directionofrotation just prior tothe-tiine that, the-washingunachine cylinder is'heing brought to a,- stop. Figure represents," infull lines-,. conditions when the arm- 27 is-at: the top ofits-stroke, conditionswhen the arm isa at; the bottom of its stroke being shownin dotted lines; It will he clear that after the arm QTlias act vated" the remainder ofthe-meehaniSnLtO move said mechanismtothe position shown in- Figure lowering movement. oi arm. 27- wil-lnvibhdraw the ratchet segment- Qe't to the'p'osition indicated-in clottedlines-in-Fig ure'5,:in which posit-iomthe second-tooth of said ratchet?segment zassaid'teeth are count ed llY-tt counter-clockwise direction, will be in aposition tooperate the pawl 23.-

lVhen cam 29 rotates 'stuflioiently toagain raise-the arm-27- to the top-0t? its strolce,-said arms acting throngh thratchet; segment- 2-1 will move lever-3]; another-step: in .'a counter.- cloekwise'directiom: Thedmnd-l'e 1-3 will-be moved synchronouslywith t heleve'r 3 by. reasonof the eonnecti'on of lever- 31- with shaftlieland-lever 4 1; which lever 4e Opel ates=t-he handle '13. In the positionshown-in Figure 6, that is; when: the high port-ion;30 of the cam 29 has "n'iovedthea-rm 27- to the top of its-stroke; theswitch-mechanism carried by th'eswit'ch block-37 willzbe-out of Contact:' with-the fingers 40; 41 542: and 43 whereby the electrical! circuit at? the delving motorl i will-he broken: Atthis: time,- also; the-- r'od' 36: 'willibe" at I theilimit oi ite= move= mentin a left-hand direction as the parts-are viewedin' Fi gums 3 to 6 inclusive; whereby the brake mechanism Controlled by said rod 36- will? he fully applieth It will lle clear,- therefore, thab 'when' the parts haveh'cen 115 nioveth to th'ejiositioni sllown in: Figure 6; the drivingyett'ect of'the motor 47; willilie'nnllh tied: andthe' brake"incPha-nism cont-rolled by rod 36' will: positively bring to: a. stop the moving mechanismcm'ryingthecunt 29'.-

It will'he observed firom the discussion flllOYO; that: in producing automatic stopping ofthe moving meehanismebheoperator need porlormonly a-simple opeitation on' a single nien'ihev, that is to say, the operator 125 will move the handle. 1? tihrouglra small angle representoddly tho-letter X. 'l"h-is'-act1mfi0l!-,S=il]t'c it allows pawl 23 to moverina cooperative relationship with the rafchet-isegmen tQ lg-will' put th'eqiaits-in position so'that III BEST AVAlLABLE (JOPE the sp *cd. of the driving motor will be reduced and the brake rod 36 will be actuated to lightly apply the brake mechanism. Therefore when the cam 29 results in further actuation of the arm 27, the rod 36 will be actuated to fully apply the brakes and electrical current of the driving motor will be disconnected.

Though the machine described above is designed primarily for the automatic stopping of moving mechanism at a predetermined point without shocks, said mechanism adapts itself for hand operation if circunr stances should render immediate stoppage desirable. Should -it be desired to stop the machine at anyinstant all that is necessary is to move the handle 13 to the position shown in Figure 6. By reason of the abutting relation between portions 45 311(1416 oft-he escape lever 20 and lever 31 respectively, said lever 31:wil1 be moved to the position shown in Figure'G, in which the elec trical connections to the motor 47 will be broken through thecontact fingers 40 ,41, 42 and. 43 and the'brake mechanism willbe fully. appliedhy reason ofthe movement of rod 36 tothe left, assh'o'wn in Eig'ureQ. If it should be desired .to merely cut'down the time in stopping, the handle 13 maybe moved ironr its running position; as shown in Eigui-e;3,.to' thevei'tical position showirin ,Figure 53,,which will so locate the'pai-tsj that when the highipart 3Q offt he "cam 29' again engagesroller QSjof-the arm :27, the mechanism will be stopped by reason of the fact that the raising. of the, arm 27'wil1 bring the parts-into the, position shown'irr Figure-6, i rwhich the electricalgcirciiit of tlie' 'n iotor is intprruptedfandtlie mass applies the brake n'ie chanism., I v I It is conceivable tl at idiielto ac I .due to the fact that lthe. ani229, is' fnot "pi- 0p C Ply positioned rel? ivefto the moving ,mech; .i l lllfil hl if l be movi g Iinecliproperposition. Io provide'for this contingency sthe". 1" tchl ican be used as a regular:'inchiiigfsivitcli by moving, lithe handle .13 from lwf l l l l running-1 o'sition "to the position. shown in Figured-c, afterwhich the high portion 30 of th e ZQ when it next engages rolfer 28, willliiio modifications as Fall within the scope oi the invention as defined by the appended claims.

I claim:

1. Stop mechanism including brake control means, electric switch means, moving mechanism for said means, said moving mechanism including ratchet mechanism having a pawl, said pawl being biased to ratcheting relationship with the remainder of said moving mechanism, a member to be stopped, and a control member for said pawhsaid moving mechanism and said control member being responsive to said member to be stopped.

2. Stop mechanism including, in combination, brake and switch means, mechanism for moving said means, said-mechanism including a pawl, a member tobe stopped, a member responsive to movement of "said member! to be stopped, said movement responsive'member including a ratchet adapted to communicate movement tosaid pa'wl-to inove sai'dbrake and switclrnieaus, mt "control membe r for said pawl. v P 3. Stop mechanism including, incombination, brake and switch means, mechanism for moving said means, said'me'chanism including a pawl, a member to bestopped, 'a member responsive to" niovement -of said member: 'to "be 1 stopped, said movement" re. spons'ive member including ratchet adapt .ed'to communicate movement" tosaid pawl I to move said brake and switch meansg-and a control member".for -said pawl, said control member being-"responsive to said'member'to be stopped .whensaid pawl is-in engagei'nent .a'vith said ratchet.

""{tl'In combination, a member to'be'stopped, sv itch and brake means, means for i'noving said switchi and brake, said -inoving means including ratchet member anda 'pawl iiiemherbiased into cooperative reliition'sjhip 'with one. another, and inanua 'lly operable means for "controlling the- 'operative relasaid pawl master.

'-: 5; In c bination, a'nieinber to be stopped,

'switchf brake means; means 5 for moving said switch and brake, saidfmoving means incliidinga' ratchet member and-a pawl'memfber biased into cooperativerelationship with one an otl'ifir and manually operable means for" cont rolling the operative relationship betv i re'eri i sa'idf r'atcliet member and said-pawl member, saidmanually operable means and said moving means being responsive to movement of said member to be stopped.

6, In combination, a member to be stopped, switch and brake means, means for moving said switch and brake, said moving means including a ratchet. member and a pawl member biased into cooperative relationship with one another, and manually operable means for controlling the operative relationship be tween said ratchet member and said pawl 1 'nsl iip betweerrsaidfrdtbhet' memberand member, said manually operable means and said moving means'being responsive to move ment of said member to be stopped, said manually operable means and said moving mechanism being connected together-through a lost motion connection.

7. In step mechanism, in combination, brake control means, electric switch means, operating means 'for said brake control means and said switch means, a member whosemotion is to. be controlled, means actuated by said last mentioned member for communicating motion to said operating means, gravity responsive means for interrupting the driving relation between said communicating means and said operating, means, and an actuating member having a "lost motion connection with said operating means for controlling said .gravity responsive means.

8. In step mechanism, in combination, brake control means, electric switch means, operating means for said brake control means and saidswitch means-an actuating member having lost motionconnection with said operatingv means, means for commune catingra progressive movementto said operating means and means responsive to said actuating member. for controlling the \operat iveness of said communicating means.

9. In step, mechanism, combination,

brake, control Jneans, fi ectriclswitch means}, operating means for said brake control mean an s dwit m w m an fer v v g comninnicatn g a progress ve, movement to another sha said-operatingmeans, means for controlling said communicating ineans, iand an actuating ine nbe ,for controlling the position of aid icon n l ae i m an and hr in a 10st motion-connectionwvithmaid operatingmeans.

10. In stop .mechanism, comprising in combination, .brakeconttdl means, electric switch means, an operating member for said .brakecontrol rmeans tandfisaid switch means, imeans. t i mu icat g'a -.pwe te s movement to said operating memb'er, said e em nt .ce raeueisat es% eei si ine e i s :a em er e 'il itfi fw ssfib r vi ig 1aien et ee seemeveme t s ea e l t s mean and sa d r.e -'e z:. lef be t; an a imb -ting membe 901 .t o li g1sa d interrupt ng me ns said, actu ieg;,me ber having a 10st :n 'otipn, connection 1 goperating memberctlngough wl ich said actua n mem may a tua e aid pe tin member in opposite directions, and connections between said communicating means and said actuating member includingsaid operating member, whereby said communicating means may operate said actuating meinber'only after said actuating member has been moved to a certain predetermined position.

11. Stop mechanism,comprising incombination,brake control means, electric switch means, operating means for said'brake-control means and said electric switch means, means for communicating motion to said operating means in response to movement of the member to be stopped, said communicating means including a member adapted to interruptthe driving relationbetween said communicatingfm e-ans and said operating means, an actuating member for controlling said interrupting member and having .a lost motion connection with said operating means, said communicating means, operating means and actuating member-all having portions co-axially mounted,

and means controlled by said operating means for moving said actuatingmember,

12. Stop mechanism, comprising in combination, a-member the motion" of which is t'o "be stopped, brake control means, electric switch means, operating means for said brake control means and said switch means,

'=, a shaft, saidpperating means'beingmounted for rotatienjxabout said shaft as an "axis, arried by said ,operatin'g jni ans, pawl eansmounted upon said other sha i-a' et means'mounted for-movement 'abdut said first mention'ed shaft as an axis actuating means for said pawl means mounted for movement about-saidiirst men tioned shaft, means mounted for movement about said first mentioned shaft for communidit' movement to said operatingmieans in response to movement of said jmembert be stopped, said operating means and said act/hating means having abutting portions pbfmitting lost motion-be tween said actuating ineans and-said operating means, said operatiiig meansbeing rigidly connected'to said shaft-and meansu'pon said shaft for comrminicating motion to said actuating member.

Signedat Ea'st Moline, Illinois, this 19th day of Nov. 1923.

FRITZ BAILZER 

